Fortigate 400F random reboot

Hi Guys,

Our Fortigate 400F randomly rebooted last Monday/Tuesday/Today and impacted the business for like 5 mins.. Log mentioned that the device went into a warm reboot.. It only started last Monday, and the only change we notice is the firmware update that happened last Sunday from 7.0.13 to 7.0.14

We did not encounter any issues like this since the installation last Nov 2023 and no changes were made since then.

Already opened TAC ticket but if anyone is having the same issue and can provide any advise.